Question about Protron PLTV-4250 42 in. LCD Television
It would turn black...we would turn it off a while and then it would work when we turn it back on....now it has turned off for good. It is just not getting any power, we have tried everything. It has always been plugged into an expensive surge protect. Any suggestions?
Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. The most common problem are the power supply for the screen itself. Most manufactures call it a Blacklight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptom.
You have a few choices:
1. You can try leaving the TV unplugged for 30 - 45 minutes so the TV can discharge and reset itself.
2. If by chance the TV is still under warranty, go that route.
3. If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists.Usually, cost under $20. And most cases the new part cost less than $15.
4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV.
I hope I shed some light on the subject for you.
Posted on Jul 18, 2009
This fix my problem: (Schottky Barrier Diodes) reads good Change it anyway
Posted on Aug 07, 2009
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Posted on Jan 02, 2017
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